Jul 19
2
Google’s John Mueller addressed the topic of sites leasing or renting out subdomains off of their main domain and letting third-parties put their content on those subdomains in an effort to rank better in Google and sell more. John didn’t call it spam but did say the search leads at Google are aware of this and have been in discussions about how to handle such efforts.
The rest is here:
Will Google Crack Down On Sites Leasing Out Its Subdomains